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3. TECHNICAL BRIEF
E. LDO Block
There are 9 LDOs in the AD6721.
- 1V8_VCORE : supplies Digital baseband Processor core and AD6721 digital core(1.8V, 80mA)
- 2V8_VMEM : supplies external memory and the interface to the external memory on the digital
baseband processor (2.8V, 150mA)
- 2V8_VEXT : supplies Radio digital interface and high voltage interface (2.8V, 200mA)
- 2V85_VSIM : supplies the SIM interface circuitry on the digital processor and SIM card
(2.85V,1.8V, 20mA)
- 1V8_VRTC : supplies the Real-Time Clock module (1.8 V, 20 µA)
- 2V5_VMIC : supplies the microphone interface circuitry (2.5 V, 2 mA)
- 2V75_VVCXO: supplies the voltage controlled crystal oscillator ( 2.75 V, 10 mA)
- VUSB:supplies USB interface circuitry( 3.2V, 20mA)
- VGP: supplies VDD_IO3 of MMP(3.2V, 40mA)
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
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Only for training and service purposes
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